os/kernelhwsrv/kerneltest/e32test/debug/t_codemodifier.cia
author sl@SLION-WIN7.fritz.box
Fri, 15 Jun 2012 03:10:57 +0200
changeset 0 bde4ae8d615e
permissions -rw-r--r--
First public contribution.
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// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of the License "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// e32test\debug\t_codemodifier.cia
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// See e32test\debug\t_codemodifier.cpp for details
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// 
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//
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#include <u32std.h>
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#ifdef __CPU_ARM
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const TUint32 KArmBreakPoint = 0xE7F123F4;
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#define BRK_4()	\
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	asm(".word %a0" : : "i" ((TInt)KArmBreakPoint)); \
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	asm(".word %a0" : : "i" ((TInt)KArmBreakPoint)); \
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	asm(".word %a0" : : "i" ((TInt)KArmBreakPoint)); \
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	asm(".word %a0" : : "i" ((TInt)KArmBreakPoint)); \
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#define BRK_16()	\
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	BRK_4()	\
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	BRK_4()	\
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	BRK_4()	\
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	BRK_4()	\
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#define BRK_64()	\
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	BRK_16()	\
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	BRK_16()	\
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	BRK_16()	\
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	BRK_16()	\
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#define BRK_256()	\
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	BRK_64()	\
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	BRK_64()	\
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	BRK_64()	\
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	BRK_64()	\
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#define BRK_1024()	\
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	BRK_256()	\
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	BRK_256()	\
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	BRK_256()	\
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	BRK_256()	\
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__NAKED__ void CodeArea()
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	{
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	//These 1025 breakpoints will go accross page boundaries.
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	asm(".word %a0" : : "i" ((TInt)KArmBreakPoint)); \
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	BRK_1024();
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	__JUMP(,lr);
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	}
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/**
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The function will run in the server and is coded to cause panic.
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However, it will be altered remotely by the client before it runs.
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*/
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__NAKED__ void TestFunc()
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	{
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	asm(".word %a0" : : "i" ((TInt)KArmBreakPoint)); //This would panic but it will be replaced by NOP
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	asm("nop");
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	__JUMP(,lr);
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	}
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#endif